Quasi-particle Interference of Heavy Fermions in Resonant X-ray Scattering
- Princeton Univ., NJ (United States). Joseph Henry Lab. and Dept. of Physics
- Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Physics and Astronomy; Univ. of British Columbia, Vancouver, BC (Canada). Quantum Matter Inst.; Max Planck Inst. for Solid State Research, Stuttgart (Germany); Canadian Inst. for Advanced Research, Toronto, ON (United States). Quantum Materials Program
- Canadian Light Sources, Inc., Saskatoon, SK (Canada)
- Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy
- Binghampton Univ. Binghamton, NY (United States). Dept. of Physics, Applied Physics and Astronomy
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
- Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Physics and Astronomy; Univ. of British Columbia, Vancouver, BC (Canada). Quantum Matter Inst.
- Princeton Univ., NJ (United States). Joseph Henry Lab. and Dept. of Physics
Resonant x-ray scattering (RXS) has recently become an increasingly important tool for the study of ordering phenomena in correlated electron systems. Yet, the interpretation of RXS experiments remains theoretically challenging because of the complexity of the RXS cross section. Central to this debate is the recent proposal that impurity-induced Friedel oscillations, akin to quasi-particle interference signals observed with a scanning tunneling microscope (STM), can lead to scattering peaks in RXS experiments. The possibility that quasi-particle properties can be probed in RXS measurements opens up a new avenue to study the bulk band structure of materials with the orbital and element selectivity provided by RXS. We test these ideas by combining RXS and STM measurements of the heavy fermion compound CeMIn5 (M = Co, Rh). Temperature- and doping-dependent RXS measurements at the Ce-M4 edge show a broad scattering enhancement that correlates with the appearance of heavy f-electron bands in these compounds. The scattering enhancement is consistent with the measured quasi-particle interference signal in the STM measurements, indicating that the quasi-particle interference can be probed through the momentum distribution of RXS signals. Overall, our experiments demonstrate new opportunities for studies of correlated electronic systems using the RXS technique.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
- Grant/Contract Number:
- AC52-06NA25396; DMR1104612
- OSTI ID:
- 1340964
- Report Number(s):
- LA-UR-16-22853
- Journal Information:
- Science Advances, Vol. 2, Issue 10; ISSN 2375-2548
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Visualizing heavy fermion confinement and Pauli-limited superconductivity in layered CeCoIn5
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journal | February 2018 |
Distinction between pristine and disorder-perturbed charge density waves in ZrTe3
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journal | January 2020 |
Visualizing Heavy Fermion Confinement and Pauli-Limited Superconductivity in Layered CeCoIn5 | text | January 2018 |
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